Specifications

AIR INJECTION SYSTEM - EFIArticle Text (p. 9)

1984 Mazda RX7For iluvmyrx7.com

Fig. 12: Checking Fast Idle Cam

3) When the connect matching mark aligns with the center of

the cam roller, clearance (throttle chamber to primary throttle valve)

should be .016-.02" (.4-.5 mm). If clearance is off, turn the fast

idling adjusting screw to bring into specifications.

Accelerator Linkage

Remove the air funnel and, with the accelerator pedal fully

depressed, observe the position of the throttle valves. They should be

horizontal (wide open position). Check that the accelerator linkage

returns fully and does not bind. See Fig. 13.

Fig. 13: Checking Accelerator Linkage

Double Throttle Diaphragm

1) Disconnect vacuum sensing tube from double throttle

diaphragm. Apply vacuum of more than 7.8 in. Hg to the double throttle

diaphragm.

2) Make sure that the No.2 secondary throttle valve is fully

closed to its movable range. Check the calibration of the double

throttle diaphragm. It should start to open 4.7 in Hg and be fully

opened 0-1.8 in Hg. See Fig. 14.